CN216777855U - Laborsaving arm of force angle adjustment mechanism - Google Patents

Abstract

The utility model discloses a labor-saving force arm angle adjusting mechanism, which is used for connecting a force arm and a main body and comprises a first angle adjusting unit and a fixing piece connected with the main body, wherein the first angle adjusting unit comprises a first locking piece, a first rotating piece and a first key, the first locking piece is arranged on the fixing piece in a sliding mode and can slide between a first locking position and a first unlocking position, the first rotating piece is connected with the fixing piece in a rotating mode and can rotate around a first axis, the first key is arranged on the main body in a sliding mode, the force arm is connected with the first rotating piece, one of the first key and the first locking piece is provided with a first driving inclined plane, and the other of the first key and the first locking piece is provided with a first roller; when the first key is pressed, the first driving inclined plane is in butt fit with the first roller so as to drive the first locking piece to slide from the first locking position to the first unlocking position; the first rotating piece and the fixed piece can be locked when the first locking piece is positioned at the first locking position; when the first locking piece is located at the first unlocking position, the first rotating piece and the fixed piece can be unlocked.

Description

Laborsaving arm of force angle adjustment mechanism

Technical Field

The utility model relates to the technical field of fitness equipment, in particular to a labor-saving force arm angle adjusting mechanism.

Background

The professional fitness equipment can improve the fitness effect, prevent the user from being injured accidentally and enhance the fitness pleasure. Among the existing fitness equipment, have an equipment, can reach the purpose of taking exercise arm strength through tensile bracelet on the arm of force, this kind of fitness equipment still is equipped with arm of force angle adjustment mechanism usually, and the person of facilitating the use adjusts the angle of the arm of force according to the demand of oneself. The arm of force angle adjusting mechanism of the existing fitness equipment adjusts the angle of the arm of force by arranging the first key, however, the first key of the existing arm of force angle adjusting mechanism has the phenomenon of poor pressing hand feeling or hard pressing, and the user experience is poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a labor-saving force arm angle adjusting mechanism for solving the technical problems.

In order to achieve the purpose, the utility model adopts the technical scheme that: a labor-saving force arm angle adjusting mechanism is used for connecting a force arm and a main body and comprises a first angle adjusting unit and a fixing piece connected with the main body, wherein the first angle adjusting unit comprises a first locking piece, a first rotating piece and a first key, the first locking piece is arranged on the fixing piece in a sliding mode and can slide between a first locking position and a first unlocking position, the first rotating piece is connected with the fixing piece in a rotating mode and can rotate around a first axis relative to the fixing piece, the first key is arranged on the main body in a sliding mode, the force arm is connected with the first rotating piece, one of the first key and the first locking piece is provided with a first driving inclined plane, and the other of the first key and the first locking piece is provided with a first roller in a rotating mode;

when the first key is pressed, the first driving inclined plane is in abutting fit with the first roller so as to drive the first locking piece to slide from a first locking position to a first unlocking position; when the first locking piece is positioned at a first locking position, the first rotating piece and the fixed piece can be locked, so that the first rotating piece cannot rotate relative to the fixed piece; when the first locking piece is located at the first unlocking position, the first rotating piece and the fixed piece can be unlocked.

Preferably, a plurality of first slots or first jacks are arranged on the first rotating member at intervals along the circumferential direction of the first rotating member; when the first locking member is located at a first locking position, one end of the first locking member is alternatively in insertion fit with the first slot or the first insertion hole so as to lock the first rotating member and the fixed member; when the first locking piece is located at a first unlocking position, one end of the first locking piece exits the first slot or the first jack;

or, a plurality of first convex parts are arranged on the first rotating part at intervals along the circumferential direction of the first rotating part, and a first slot is arranged on the first locking part; when the first locking piece is located at a first locking position, the first slot is selectively in inserting fit with the first convex part so as to lock the first rotating piece and the fixing piece; when the first locking piece is located at the first unlocking position, the first convex part exits the first slot.

Preferably, the first slot is a tapered slot, and an end of the first locking member inserted into the first slot is also provided with a tapered structure capable of being engaged with the first slot; alternatively, the first insertion hole is a tapered hole, and the end of the first locking member inserted into the first insertion hole is also provided with a tapered structure capable of being engaged with the first insertion hole.

Preferably, a first elastic piece is arranged between the first locking piece and the fixed piece, and the first locking piece can be reset from a first unlocking position to a first locking position under the action of the first elastic piece; alternatively, the first locking member can be reset from the first unlocked position to the first locked position under its own weight.

Preferably, the portable electronic device further comprises a second elastic piece arranged between the first key and the main body; when the first key is released, the first key can reset under the action of the second elastic piece.

Preferably, the fixing part is provided with a first guide sleeve for guiding the first locking part in a sliding manner, and the first guide sleeve is sleeved outside the first locking part.

Preferably, the angle adjusting device further comprises a second angle adjusting unit, the second angle adjusting unit comprises a second locking member, a second rotating member and a sliding member, the second locking member is slidably arranged on the fixed member and can slide between a second locking position and a second unlocking position, the second rotating member is rotatably connected with the first rotating member and can rotate around a second axis relative to the first rotating member, the sliding member is slidably arranged on the fixed member, the first axis is different from the second axis, the force arm is connected with the second rotating member, and the second rotating member is in transmission connection with the sliding member so that the sliding member can be driven to slide relative to the fixed member when the second rotating member rotates around the second axis;

when the first locking piece is located at a first unlocking position, the force arm can drive the first rotating piece to rotate around the first axis through the second rotating piece; when the second locking member is located at a second locking position, the sliding member and the fixed member can be locked, so that the sliding member cannot slide relative to the fixed member; and when the second locking piece is positioned at a second unlocking position, the locking of the sliding piece and the fixing piece can be released.

Preferably, the second angle adjusting unit further comprises a second key slidably disposed on the main body, one of the second key and the second locking member is provided with a second driving inclined plane, and the other of the second key and the second locking member is rotatably provided with a second roller; when the second key is pressed, the second driving inclined plane is in butt fit with the second roller to drive the second locking piece to slide from the second locking position to the second unlocking position.

Preferably, a plurality of second slots or second jacks are arranged on the sliding piece at intervals along the sliding direction of the sliding piece; when the second locking piece is located at a second locking position, one end of the second locking piece is alternatively inserted and matched with the second slot or the second insertion hole so as to lock the sliding piece and the fixing piece; when the second locking piece is located at a second unlocking position, one end of the second locking piece is withdrawn from the second slot or the second jack;

or, a plurality of second convex parts are arranged on the sliding part at intervals along the sliding direction of the sliding part, and a second slot is arranged on the second locking part; when the second locking piece is located at a second locking position, the second slot is alternatively matched with the second convex part in an inserting manner so as to lock the sliding piece and the fixing piece; when the second locking piece is located at a second unlocking position, the second convex part is withdrawn from the second slot.

Preferably, the second slot is a tapered slot, and one end of the second locking member inserted into the second slot is also provided with a tapered structure capable of being engaged with the second slot; the second jack is a tapered hole, and one end of the second locking member inserted into the second jack is also set to be a tapered structure capable of being engaged with the second jack.

Compared with the prior art, the utility model has the following beneficial effects:

according to the labor-saving force arm angle adjusting mechanism, the first driving inclined surface is arranged on one of the first key and the first locking piece, the first roller is arranged on the other one of the first key and the first locking piece in a rotating mode, when the first key is pressed, the first driving inclined surface is in butt fit with the first roller to drive the first locking piece to slide to the first unlocking position from the first locking position, meanwhile, relative movement between the first driving inclined surface and the first roller is rolling, friction force is small, the first key is enabled to be good in hand feeling, pressing is labor-saving, and use experience of users is improved.

Drawings

FIG. 1 is a schematic perspective view of a first embodiment of the present invention (showing the moment arm in an initial position, the first locking member in a first locking position, and the second locking member in a second locking position);

FIG. 2 is an elevational view of a first embodiment of the utility model (showing the moment arm in the initial position, the first locking member in the first locked position, and the second locking member in the second locked position);

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a partial cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a side view of a first embodiment of the utility model (showing the moment arm in the initial position, the first locking member in the first locking position, and the second locking member in the second locking position);

FIG. 6 is a partial cross-sectional view taken along line C-C of FIG. 5;

FIG. 7 is an exploded view of the first embodiment of the present invention;

FIG. 8 is a perspective view of a slider according to an embodiment of the present invention;

FIG. 9 is a perspective view of a second rotatable member according to one embodiment of the present invention;

FIG. 10 is a schematic view of the first locking member in a first unlocked position and the second locking member in a second unlocked position in accordance with the embodiment of the present invention;

FIG. 11 is an enlarged partial schematic view at A of FIG. 10;

FIG. 12 is a schematic view of the moment arm of the first embodiment of the present invention rotated around the first axis to a position where the length direction thereof forms an included angle with the vertical direction;

fig. 13 is a schematic view illustrating a moment arm of the first embodiment of the present invention rotated around a second axis to a state where a length direction thereof forms an included angle with a vertical direction;

FIG. 14 is a partial cross-sectional view of a second embodiment of the present invention;

fig. 15 is a schematic view illustrating the moment arm of the second embodiment of the present invention rotated around the second axis to a state where the length direction thereof forms a certain included angle with the vertical direction.

The reference numerals are illustrated below:

11-a first locking member, 12-a first rotating member, 121-a first axis, 122-a first slot, 13-a first key, 131-a first key sleeve, 132-a first push rod, 1321-a first driving bevel, 14-a first roller, 15-a first elastic member, 16-a second elastic member, 17-a first guide sleeve, 2-a fixed member, 31-a second locking member, 32-a second rotating member, 321-a second axis, 322-a toothed member, 33-a sliding member, 331-a rack, 332-a second slot, 34-a third elastic member, 35-a second key, 351-a second key sleeve, 352-a second push rod, 3521-a second driving bevel, 36-a second roller, 37-a fourth elastic member, 38-a rotating shaft, 39-a second guide sleeve, 30-a transmission piece, 4-a moment arm and 5-a main body.

Detailed Description

The utility model is further explained in detail with the accompanying drawings and the embodiments; however, the force arm angle adjusting mechanism of the present invention is not limited to the embodiment.

Example one

Referring to fig. 1 to 13, the labor-saving arm angle adjusting mechanism of this embodiment is used for connecting an arm 4 and a main body 5, and includes a first angle adjusting unit and a fixing member 2 connected to the main body 5, where the first angle adjusting unit includes a first locking member 11 slidably disposed on the fixing member 2 and capable of sliding between a first locking position and a first unlocking position with respect to the fixing member 2, a first rotating member 12 rotatably connected to the fixing member 2 and capable of rotating around a first axis 121 with respect to the fixing member 2, and a first button 13 slidably disposed on the main body 5, the arm 4 is connected to the first rotating member 12, one of the first button 13 and the first locking member 11 is provided with a first driving inclined surface 1321, and the other of the first button 13 and the first locking member 11 is provided with a first roller 14;

when the first key 13 is pressed, the first driving inclined surface 1321 is in abutting fit with the first roller 14 to drive the first locking member 11 to slide from the first locking position to the first unlocking position; when the first button 13 is released, the first locking member 11 can be reset from the first unlocking position to the first locking position; when the first locking member 11 is located at the first locking position, the first locking member 11 can lock the first rotating member 12 and the fixed member 2, so that the first rotating member 12 cannot rotate around the first axis 121 relative to the fixed member 2, and the force arm 4 cannot rotate around the first axis 121 relative to the main body 5, thereby fixing the force arm 4; when the first locking member 11 is located at the first unlocking position, the first locking member 11 can unlock the first rotating member 12 and the fixed member 2, so that the first rotating member 12 can rotate around the first axis 121 relative to the fixed member 2, and further, the force arm 4 can rotate around the first axis 121 relative to the main body 5 to adjust the angle of the force arm 4. In the embodiment, the first driving inclined plane 1321 is arranged on one of the first key 13 and the first locking member 11, and the first roller 14 is arranged on the other of the first key 13 and the first locking member 11 in a rotating manner, so that when the first key 13 is pressed, the first driving inclined plane 1321 is in butt fit with the first roller 14 to drive the first locking member 11 to slide from the first locking position to the first unlocking position, meanwhile, the relative movement between the first driving inclined plane 1321 and the first roller 14 is rolling, the friction force is small, the first key 13 is enabled to feel better, the pressing force is saved, and the use experience of a user is improved.

Specifically, in the present embodiment, the first button 13 is provided with a first driving inclined plane 1321, and the first locking member 11 is rotatably provided with a first roller 14; the first key 13 comprises a first key sleeve 131 and a first push rod 132 fixedly connected with the first key sleeve 131, and the first push rod 132 is provided with the first driving inclined plane 1321; the main body 5 is embodied as a frame of the fitness equipment; the fixing piece 2 and the main body 5 are of a split structure, and the fixing piece 2 is fixedly connected with the main body 5 through bolts. In other embodiments, a first driving inclined surface may be provided on the first locking member, and a first roller is rotatably provided on the first key, so that when the first key is pressed, the first driving inclined surface is in abutting engagement with the first roller to drive the first locking member to slide from the first locking position to the first unlocking position; the fixing piece and the main body can also be of an integrated structure.

Referring to fig. 3 and fig. 5 to 8, in the present embodiment, a plurality of first slots 122 are formed on the first rotating member 12 at equal intervals along the circumferential direction thereof; when the first locking member 11 is located at the first locking position, one end of the first locking member 11 is alternatively inserted into the first insertion slot 122 to lock the first rotating member 12 with the fixed member 2; when the first locking member 11 is located at the first unlocking position, one end of the first locking member 11 exits the first slot 122 to unlock the first rotating member 12 and the fixed member 2.

Referring to fig. 3 and fig. 5 to 8, in the present embodiment, a first elastic member 15 is disposed between the first locking member 11 and the fixing member 2, and the first locking member 11 can be returned from the first unlocking position to the first locking position by the first elastic member 15. In other embodiments, the first locking member may be configured to be returned from the first unlocked position to the first locked position by its own weight.

Referring to fig. 5 to 8, in the present embodiment, the second elastic member 16 is further included between the first button 13 and the main body 5, and the second elastic member 16 is specifically abutted between the first push rod 132 and the main body 5; when the first key 13 is released, the first key 13 can be reset under the action of the second elastic element 16.

Referring to fig. 3 and 5 to 10, in the present embodiment, the first slot 122 is a tapered slot, and accordingly, an end of the first fastening member 11 inserted into the first slot 122 is also configured to be tapered to engage with the first slot 122, so that when the end of the first fastening member 11 is alternatively inserted into the first slot 122, the end of the first fastening member 11 can be engaged with the first slot 122 seamlessly under the action of the first elastic member 15, thereby improving the stability of fixing the moment arm 4.

Referring to fig. 1 to 9, in the present embodiment, the present invention further includes a second angle adjusting unit, the second angle adjusting unit includes a second locking member 31 slidably disposed on the fixed member 2 and capable of sliding between a second locking position and a second unlocking position relative to the fixed member 2, a second rotating member 32 rotatably connected to the first rotating member 12, and a sliding member 33 slidably disposed on the fixed member 2, the second rotating member 32 is capable of rotating around a second axis 321 relative to the first rotating member 12, so that the second rotating member 32 is capable of rotating around the second axis 321 relative to the fixed member 2, the first axis 121 is different from the second axis 321, the moment arm 4 is fixedly attached to the second rotating member 32, and the moment arm 4 is indirectly connected to the first rotating member 12 through the second rotating member 32; the second rotating part 32 is in transmission connection with the sliding part 33, so that the sliding part 33 can be driven to slide relative to the fixed part 2 when the second rotating part 32 rotates around the second axis 321;

when the first locking member 11 is located at the first unlocking position, the force arm 4 can drive the first rotating member 12 to rotate around the first axis 121 relative to the fixed member 2 through the second rotating member 32; when the second locking member 31 is located at the second locking position, the second locking member 31 can lock the sliding member 33 and the fixed member 2, so that the sliding member 33 cannot slide relative to the fixed member 2, and further the second rotating member 32 cannot rotate around the second axis 321 relative to the first rotating member 12, and the force arm 4 cannot rotate around the second axis 321 relative to the main body 5, thereby fixing the force arm 4; when the second locking member 31 is located at the second unlocking position, the second locking member 31 can unlock the sliding member 33 and the fixing member 2, so that the sliding member 33 can slide relative to the fixing member 2, and further the second rotating member 32 can rotate around the second axis 321 relative to the first rotating member 12, that is, the force arm 4 can rotate around the second axis 321 relative to the main body 5 to adjust the angle of the force arm 4, at this time, the force arm 4 can drive the second rotating member 32 to rotate around the second axis 321 relative to the first rotating member 12, and the second rotating member 32 can drive the sliding member 33 to slide relative to the fixing member 2. This embodiment can realize the arm of force 4 angle modulation in another side through setting up second angle modulation unit to the user can carry out nimble multi-angle to the arm of force 4 according to size and custom and adjust, and it is more convenient to use.

Specifically, in this embodiment, the second rotating member 32 is a gear having a tooth portion 322, the sliding member 33 is provided with a rack 331 capable of meshing with the tooth portion 322, and the second rotating member 32 is in transmission connection with the sliding member 33 through the meshing transmission between the tooth portion 322 and the rack 331, so that the sliding member 33 can be driven to slide relative to the fixed member 2 when the second rotating member 32 rotates around the second axis 321; one end of the force arm 4 is fixedly connected with the second rotating part 32 through a bolt, and the other end of the force arm 4 is connected with a hand-pulling ring (not shown in the figure); as shown in fig. 3, both sides of the second rotating member 32 are respectively rotatably connected to the first rotating member 12 through a rotating shaft 38.

Referring to fig. 5 to 8, in the embodiment, a third elastic member 34 is disposed between the second locking member 31 and the fixing member 2, and the second locking member 31 can be returned from the second unlocking position to the second locking position under the action of the third elastic member 34. In other embodiments, it may be provided that the second locking member is capable of returning from the second unlocked position to the second locked position under its own weight.

Referring to fig. 1 to 9, in the present embodiment, the second angle adjusting unit further includes a second button 35 slidably disposed on the main body 5, one of the second button 35 and the second locking member 31 is provided with a second driving inclined plane 3521, and the other of the second button 35 and the second locking member 31 is provided with a second roller 36; when the second key 35 is pressed, the second driving inclined plane 3521 is abutted and matched with the second roller 36 to drive the second locking member 31 to slide from the second locking position to the second unlocking position; when the second button 35 is released, the second locking member 31 can be returned from the second unlocking position to the second locking position. Specifically, in this embodiment, the second key 35 is provided with a second driving inclined plane 3521, and the second locking member 31 is rotatably provided with a second roller 36; the second key 35 includes a second key sleeve 351 and a second push rod 352 fixedly connected with the second key sleeve 351, and the second push rod 352 is provided with the second driving inclined plane 3521; a fourth elastic element 37 is arranged between the second key 35 and the main body 5, the fourth elastic element 37 is specifically abutted between the second push rod 352 and the main body 5, and when the second key 35 is released, the second key 35 can be reset under the action of the fourth elastic element 37.

Referring to fig. 1 and fig. 5 to 8, in the present embodiment, a plurality of second slots 332 are disposed on the sliding member 33 at equal intervals along the sliding direction; when the second locking member 31 is located at the second locking position, one end of the second locking member 31 is alternatively inserted into the second slot 332 to lock the sliding member 33 and the fixing member 2, so that the sliding member 33 cannot slide relative to the fixing member 2; when the second locking member 31 is located at the second unlocking position, one end of the second locking member 31 exits the second slot 332 to unlock the sliding member 33 and the fixing member 2.

In the present embodiment, the first axis 121 and the second axis 321 are perpendicular to each other, and taking the direction shown in fig. 1 or fig. 5 as an example, the first axis 121 extends in the left-right direction; the sliding member 33 can further rotate around the first axis 121 relative to the fixed member 2, the first rotating member 12 is in rotational linkage with the sliding member 33, such that when the second rotating member 32 is driven to rotate around the first axis 121 by the force arm 4, the second rotating member 32 can drive the sliding member 33 to rotate around the first axis 121 by the first rotating member 12, such that the second rotating member 32 and the sliding member 33 are always in transmission connection, and accordingly, the second slot 332 extends along the circumferential direction of the sliding member 33 to form an annular slot, such that when the first rotating member 12 drives the sliding member 33 to rotate around the first axis 121, one end of the second locking member 31, which is in insertion engagement with the second slot 332, can slide in the second slot 332.

Referring to fig. 5 to 8 and 11, in the present embodiment, the second slot 332 is a tapered slot, and accordingly, an end of the second locking member 31 inserted into the second slot 332 is also configured to be a tapered structure capable of engaging with the second slot 332, so that when the end of the second locking member 31 is alternatively inserted into and engaged with the second slot 332, under the action of the third elastic member 34, the end of the second locking member 31 can be seamlessly engaged with the second slot 332, thereby improving the stability of fixing the moment arm 4.

Referring to fig. 1 to 9, in the embodiment, the fixing member 2 is provided with a first guide sleeve 17 for slidably guiding the first locking member 11, the first guide sleeve 17 is sleeved outside the first locking member 11, and the first elastic member 15 is specifically abutted between the first locking member 11 and the first guide sleeve 17; still be equipped with on the mounting 2 and be used for carrying out the second uide bushing 39 of sliding guide to second retaining member 31, second uide bushing 39 cover is established outside second retaining member 31, and third elastic component 34 specifically supports and locates between second retaining member 31 and the second uide bushing 39.

Referring to fig. 1 to 9, in the present embodiment, the fixing element 2 is a fixing sleeve, the sliding element 33 is slidably disposed in the fixing sleeve and can rotate along the first axis 121 relative to the fixing sleeve, and the first rotating element 12 is a sleeve rotatably disposed in the fixing sleeve; the first elastic member 15, the second elastic member 16, the third elastic member 34, and the fourth elastic member 37 are all springs.

The use principle of the embodiment is briefly described as follows:

as shown in fig. 1, 4 and 5, in a normal state, the force arm 4 is located at an initial position, at this time, an included angle between the length direction of the force arm 4 and the vertical direction is 0 degree, the first locking member 11 is located at a first locking position, and the second locking member 31 is located at a second locking position;

when the locking device is used, a user can press the first key 13 to enable the first driving inclined surface 1321 on the first key 13 to be in abutting fit with the first pulley to drive the first locking member 11 to slide from the first locking position to the first unlocking position, at this time, the force arm 4 can drive the first rotating member 12 to rotate around the first axis 121 through the second rotating member 32 to adjust the angle of the force arm 4, the first rotating member 12 drives the sliding member 33 to rotate around the first axis 121 while rotating around the first axis 121, the first rotating member 12 rotates to another position relative to the fixing member 2, then the first key 13 is released, the first key 13 is reset under the action of the second elastic member 16, the first locking member 11 is reset to the first locking position under the action of the first elastic member 15, one end of the first locking member 11 is inserted and matched with another first slot 122 again, so as to fix the force arm 4, compared with the position of the force arm 4 in fig. 4 or fig. 5 or fig. 6, fig. 12 shows a schematic view of the moment arm 4 rotating around the first axis 121 until the length of the moment arm 4 forms an angle with the vertical direction;

the user can also press the second button 35 to make the second driving inclined plane 3521 on the second button 35 abut against and cooperate with the second pulley to drive the second locking member 31 to slide from the second locking position to the second unlocking position, at this time, the second rotating member 32 can be driven to rotate around the second axis 321 by the force arm 4 to adjust the angle of the force arm 4, the second rotating member 32 drives the sliding member 33 to slide to another position relative to the fixed member 2, the second key 35 is released, the second key 35 is reset under the action of the fourth elastic member 37, the second locking member 31 is reset to a second locking position under the action of the third elastic member 34, one end of the second locking member 31 is inserted into another second slot 332 again, thereby fixing the moment arm 4, fig. 13 shows the moment arm 4 rotating around the second axis 321 to a state where the length direction of the moment arm 4 forms an angle with the vertical direction, compared to the position of the moment arm 4 in fig. 4, 5 or 6.

In other embodiments, the first slot may be replaced by a first jack, and one end of the first locking member is selected to be in plugging fit with the first jack; the first insertion hole is a tapered hole, and correspondingly, the end of the first locking member inserted into the first insertion hole is also arranged into a tapered structure capable of being engaged with the first insertion hole. Or in other embodiments, the first rotating member is provided with a plurality of first protrusions at equal intervals along the circumferential direction thereof, and the first locking member is provided with a first slot; when the first locking piece is positioned at the first locking position, the first slot is alternatively matched with the first convex part in an inserting way so as to lock the first rotating piece and the fixing piece; when the first locking piece is located at the first unlocking position, the first convex part exits the first slot.

In other embodiments, the second slot may be replaced by a second insertion hole, the second insertion hole extends along the circumferential direction of the sliding member, and one end of the second locking member is alternatively inserted into and matched with the second insertion hole; the second insertion hole is a tapered hole, and correspondingly, one end of the second locking member inserted into the second insertion hole is also provided with a tapered structure capable of being engaged with the second insertion hole. Or in other embodiments, the sliding member is provided with a plurality of second protrusions at equal intervals along the sliding direction thereof, and the second locking member is provided with a second slot; when the second locking piece is positioned at the second locking position, the second slot is alternatively inserted and matched with the second convex part so as to lock the sliding piece and the fixing piece; when the second locking piece is located at the second unlocking position, the second convex part is withdrawn from the second slot.

Example two

The present embodiment is substantially the same as the first embodiment, and the difference is only that:

referring to fig. 14 and 15, in the present embodiment, the second angle adjusting unit further includes a transmission member 30, one end of the transmission member 30 is rotatably connected to the second rotating member 32, the other end of the transmission member 30 is rotatably connected to the sliding member 33, and the second rotating member 32 is rotatably connected to the sliding member 33 through the transmission member 30, so that the sliding member 33 can be driven to slide relative to the fixing member 2 through the transmission member 30 when the second rotating member 32 rotates around the second axis 321. Specifically, in the present embodiment, the axis of the one end of the transmission member 30 rotatably connected to the second rotating member 32 is parallel to the second axis 321, and the axis of the other end of the transmission member 30 rotatably connected to the sliding member 33 is also parallel to the second axis 321.

In this embodiment, the structures and principles of the remaining portions not described are consistent with the embodiment, and are not described herein again.

Compared with the prior art, the labor-saving moment arm angle adjusting mechanism has the advantages that the first driving inclined surface is arranged on one of the first key and the first locking piece, and the first roller is arranged on the other of the first key and the first locking piece in a rotating mode, so that when the first key is pressed, the first driving inclined surface is in butt fit with the first roller to drive the first locking piece to slide from the first locking position to the first unlocking position, meanwhile, relative movement between the first driving inclined surface and the first roller is rolling, friction force is small, hand feeling of the first key is better, pressing is labor-saving, and use experience of a user is improved.

The above embodiments are only used to further illustrate the labor-saving arm angle adjusting mechanism of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A labor-saving force arm angle adjusting mechanism is used for connecting a force arm and a main body and is characterized by comprising a first angle adjusting unit and a fixing piece connected with the main body, wherein the first angle adjusting unit comprises a first locking piece, a first rotating piece and a first key, the first locking piece is arranged on the fixing piece in a sliding mode and can slide between a first locking position and a first unlocking position, the first rotating piece is connected with the fixing piece in a rotating mode and can rotate around a first axis relative to the fixing piece, the first key is arranged on the main body in a sliding mode, the force arm is connected with the first rotating piece, one of the first key and the first locking piece is provided with a first driving inclined plane, and the other of the first key and the first locking piece is provided with a first roller in a rotating mode;

when the first key is pressed, the first driving inclined plane is in abutting fit with the first roller so as to drive the first locking piece to slide from a first locking position to a first unlocking position; when the first locking piece is located at a first locking position, the first rotating piece and the fixed piece can be locked, so that the first rotating piece cannot rotate relative to the fixed piece; when the first locking piece is located at the first unlocking position, the first rotating piece and the fixed piece can be unlocked.

2. The labor-saving moment arm angle adjusting mechanism as claimed in claim 1, wherein the first rotating member is provided with a plurality of first slots or first insertion holes at intervals along a circumferential direction thereof; when the first locking member is located at a first locking position, one end of the first locking member is alternatively in insertion fit with the first slot or the first insertion hole so as to lock the first rotating member and the fixed member; when the first locking piece is located at a first unlocking position, one end of the first locking piece exits the first slot or the first jack;

or, a plurality of first convex parts are arranged on the first rotating part at intervals along the circumferential direction of the first rotating part, and a first slot is arranged on the first locking part; when the first locking piece is located at a first locking position, the first slot is selectively in inserting fit with the first convex part so as to lock the first rotating piece and the fixing piece; when the first locking piece is located at the first unlocking position, the first convex part exits the first slot.

3. The effort-saving moment arm angle adjusting mechanism of claim 2, wherein the first slot is a tapered slot, and an end of the first locking member inserted into the first slot is also configured to be a tapered structure engaged with the first slot; alternatively, the first insertion hole is a tapered hole, and the end of the first locking member inserted into the first insertion hole is also provided with a tapered structure capable of being engaged with the first insertion hole.

4. The labor-saving moment arm angle adjusting mechanism is characterized in that a first elastic piece is arranged between the first locking piece and the fixing piece, and the first locking piece can be reset from a first unlocking position to a first locking position under the action of the first elastic piece; alternatively, the first locking member can be reset from the first unlocked position to the first locked position under its own weight.

5. The effort-saving moment arm angle adjusting mechanism of claim 1, further comprising a second elastic member disposed between the first button and the main body; when the first key is released, the first key can reset under the action of the second elastic piece.

6. The effort-saving moment arm angle adjusting mechanism as claimed in claim 1, wherein the fixing member is provided with a first guide sleeve for slidably guiding the first locking member, and the first guide sleeve is sleeved outside the first locking member.

7. The labor-saving moment arm angle adjusting mechanism of claim 1, further comprising a second angle adjusting unit, wherein the second angle adjusting unit comprises a second locking member slidably disposed on the fixed member and capable of sliding between a second locking position and a second unlocking position, a second rotating member rotatably connected to the first rotating member and capable of rotating around a second axis relative to the first rotating member, and a sliding member slidably disposed on the fixed member, the first axis is different from the second axis, the moment arm is connected to the second rotating member, and the second rotating member is in transmission connection with the sliding member so that the sliding member can be driven to slide relative to the fixed member when the second rotating member rotates around the second axis;

when the first locking piece is located at a first unlocking position, the force arm can drive the first rotating piece to rotate around the first axis through the second rotating piece; when the second locking piece is positioned at a second locking position, the sliding piece and the fixed piece can be locked, so that the sliding piece cannot slide relative to the fixed piece; and when the second locking piece is positioned at a second unlocking position, the locking of the sliding piece and the fixing piece can be released.

8. The labor-saving moment arm angle adjusting mechanism as claimed in claim 7, wherein the second angle adjusting unit further comprises a second button slidably disposed on the main body, one of the second button and the second locking member is provided with a second driving slope, and the other of the second button and the second locking member is rotatably provided with a second roller; when the second key is pressed, the second driving inclined plane is in butt fit with the second roller to drive the second locking piece to slide from the second locking position to the second unlocking position.

9. The labor-saving moment arm angle adjusting mechanism as claimed in claim 7, wherein the sliding member is provided with a plurality of second slots or second insertion holes at intervals along the sliding direction; when the second locking piece is located at a second locking position, one end of the second locking piece is alternatively inserted and matched with the second slot or the second insertion hole so as to lock the sliding piece and the fixing piece; when the second locking piece is located at a second unlocking position, one end of the second locking piece is withdrawn from the second slot or the second jack;

or, a plurality of second convex parts are arranged on the sliding part at intervals along the sliding direction of the sliding part, and a second slot is arranged on the second locking part; when the second locking piece is located at a second locking position, the second slot is alternatively in inserted connection with the second convex part to lock the sliding piece and the fixing piece; when the second locking piece is located at a second unlocking position, the second convex part is withdrawn from the second slot.

10. The effort-saving moment arm angle adjusting mechanism of claim 9, wherein the second slot is a tapered slot, and the end of the second locking member inserted into the second slot is also configured to be a tapered structure capable of engaging with the second slot; the second jack is a tapered hole, and one end of the second locking member inserted into the second jack is also set to be a tapered structure capable of being engaged with the second jack.

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